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  • Oracle Magazine, January/February 2009

    Oracle Magazine January/February features articles on Oracle Exadata, Oracle grid infrastructure, Oracle embedded databases, Oracle WebLogic Server, encrypting Tablespacess, managing database resources, Tom Kyte on Dynamic Sampling, easier interactive data entry, coding PL/SQL, tips on Oracle Application Express and much more.

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  • Agile Documentation

    - by Nick Harrison
    We all know that one of the premises of the agile manifesto is to value Working Software over Comprehensive Documentation. This is a wonderful idea and it takes a tremendous burden off of project implementations. I have seen as many projects fail because of the maintenance weight of the project documentations as I have for any reason. But this goal as important as it is may not always be practical. Sometimes the client will simply insist on tedious documentation despite the arguments against it. This may be to calm a nervous client. This may be to satisfy an audit / compliance requirement. This may be a non-too subtle attempt at sabotaging the project. Ok, it is probably not an all out attempt to sabotage the project, but it will probably feel that way. So what can we do to keep to the spirit of the Agile Manifesto but still meet the needs of the client wanting the documentation? This is a good question that I have been puzzling over lately! I hope to explore some possible answers more fully here. A common theme that my solutions are likely to follow is the same theme that I often follow with simplifying complex business logic. Make it table driven! My thought is that the sought after documentation could be a report or reports out of a metadata repository. Reports are much easier to maintain than hand written documentation. Here are a few additional advantages that we can explore over time: Reports will take advantage of the fact that different people have different needs and different format requirements Reports and the supporting metadata are more easily validated and the validation can be automated. If the application itself uses this metadata than there never has to be a question as to whether or not the metadata is up to date. It is up to date or the application would not work. In many cases we should be able to automatically gather most of the Meta data that we need using reflection, system tables, etc. I think that this will lower the total cost of ownership for the documentation and may provide something useful beyond having a pretty document to look at.  What are your thoughts?

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  • Design pattern to handle queries using multiple models

    - by coderkane
    I am presented with a dilemma while trying to re-designing the class structure for my PHP/MySQL application to make it more elegant and conform it to the SOLID principle. The problem goes like this: Let as assume, there is an abstract class called person which has certain properties to define a generic person, such as name, age, date of birth etc. There are two classes, student, and teacher, that implements this abstract class. They add their own unique properties to it. I have designed all the three classes to include all the operational logic (details of which are not relevant in context of the question). Now, I need to create views/reports/data grids which contain details from multiple classes, for example, say, a list of all students doing projects in Chemistry mentored by a teacher whose name is the parameter to the query. This is just one example of a view, there are many different views in the application, which uses data from 3-4 tables, and each of them have multiple input parameters to generate them. Considering this particular example, I have written the relevant query using JOIN and the results are as expected and proper, now here is the dilemma: Keeping in mind the single responsibility principle, where should I keep this query? It does not belong to either Student class, or Teacher class or any other classes currently present. a) Should I create a new class, say dataView class, and design it as a MVC pattern and keep the query there? What about the other views? how do they fit in this architecture? b) Should I not keep the query in code at all, and make it DB View ? c) Am I completely wrong in the approach? If so what is the right approach? My considerations are as follows: a) should be easy to add new views later on if requirement comes, without having to copy-paste-modify code b) would like to make it as loosely coupled as possible so that if minor db structure changes happen, it does not break I did google searches on report design and OOP report generators, but all the result seem to focus on the visual design of the report rather than fetching the data. I have already taken care of the visual aspect of the report using MVC with html templates. I am sure this is a very fundamental problem with known solution, but I am somehow not able to find it (maybe searching with wrong keyword). Edit1: Modified the title to make it more relevant Edit2: The accepted answer got me thinking in the right direction and identify my design flaws, which eventually led me to find this question and the solution in Stack Overflow which gave me the detailed answer to clear the confusion.

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  • Oracle Magazine, May/June 2006

    Oracle Magazine May/June 2006 features articles on Oracle developer tools, Semantic Web, Lucasfilm, Manpower, PL/SQL Best Practices, SQL Developer, ODP.NET and Oracle Database 10g Release 2, PHP, Oracle Application Express, and much more.

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  • Problem with RecordMyDesktop program

    - by Saeid87
    I am trying to record some tutorials using RecordMyDesktop application. The problem is the video becomes jagged and unusable as you can see from the screenshot I have taken while playing a saved video. I don't know what can be the problem, but I guess it has something to do with my graphics driver. My laptop is using Intel HD 3000 series and I couldn't find any update for it. If you know what might be the problem and how to solve it I will really appreciate it!

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  • ASP.NET 4.0 and the Entity Framework 4 - Part 4 - A 3 Layered Approach to the Entity Framework

    In this article, Vince suggests a pattern to use when developing a three layered application using the Entity Framework 4. After providing a short introduction he demonstrates the creation of the database, data access layer, business logic layer, and a web form. He does so with the help of detailed explanations, source code examples and related screenshots. He also examines how to select records to load a Drop Down List, including adding, editing and deleting records.

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  • Utiliser une ProgressDialog dans ses applications Android, par Axon de Tuto Mobile

    Axon_TutoMobile vous propose un article sur l'utilisation d' une ProgressDialog dans les applications Android Citation: Le but de ce tutorial est d'expliquer comment utiliser une ProgressDialog dans son application Android. Il peut être parfois utile d'afficher une barre de progression renseignant l'utilisateur sur l'avancement. Android fournit un moyen via la ProgressDialog pour les phases d'attente.

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  • 7 Preventable Backup Errors

    The loss of a company's data is often enough to put the company out of business; and yet backup errors are generally avoidable with the application of common sense rather than deep technical knowledge. Grant digs into memories of his long experience of giving forum advice, to come up with the most easily preventable backup errors. Get Smart with SQL Backup Pro Powerful centralised management, encryption and more.SQL Backup Pro was the smartest kid at school Discover why.

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  • Utiliser QML et QtWebKit avec PySide, le binding Python de Qt, un article traduit par Thibaut Cuvelier

    Ce tutoriel sur PySide montre comment intégrer du code Python et QtWebKit avec QML. Le résultat sera un contenu HTML et une logique dans une application QML, tout en pouvant envoyer des messages entre le contexte JavaScript de la QWebView et le monde Python. Il utilisera JSON, alert() et evaluateJavaScript() pour échanger des structures de données arbitraires (valeurs, listes, dictionnaires) entre Python et JavaScript dans la QWebView. Utiliser QML et QtWebKit avec PySide...

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  • Heating up problem in ubuntu 11.10 in vaio laptop

    - by shubham
    So i have the power top log and as you can see the two application touchpad and pci are just sucking so any solutions to this problem i am using i5 with ati graphic card if it its relevant 43.7% (365.8) PS/2 keyboard/mouse/touchpad interrupt 16.9% (141.3) [sky2@pci:0000:04:00.0] <interrupt> 12.3% (102.8) chrome 6.3% ( 52.8) compiz 6.1% ( 51.4) [Rescheduling interrupts] <kernel IPI> 5.8% ( 48.7) [radeon] <interrupt> 1.6% ( 13.6) [kernel scheduler] Load balancing tick 1.4% ( 11.7) kworker/0:1 1.2% ( 9.9) ubuntuone-syncd 0.9% ( 7.7) Xorg 0.7% ( 5.6) kworker/0:0

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  • IBM DB2 Error Checking

    Database management systems (DBMSs) have simultaneously simplified and complicated the lives of many IT workers. Error codes passed from the database back to the application can take on more than 1000 values. What level of error checking should developers include in applications?

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  • Emaroo 1.4.0 Released

    - by WeigeltRo
    Emaroo is a free utility for browsing most recently used (MRU) lists of various applications. Quickly open files, jump to their folder in Windows Explorer, copy their path - all with just a few keystrokes or mouse clicks. tl;dr: Emaroo 1.4.0 is out, go download it on www.roland-weigelt.de/emaroo   Why Emaroo? Let me give you a few examples. Let’s assume you have pinned Emaroo to the first spot on the task bar so you can start it by hitting Win+1. To start one of the most recently used Visual Studio solutions you type Win+1, [maybe arrow key down a few times], Enter This means that you can start the most recent solution simply by Win+1, Enter What else? If you want to open an Explorer window at the file location of the solution, you type Ctrl+E instead of Enter.   If you know that the solution contains “foo” in its name, you can type “foo” to filter the list. Because this is not a general purpose search like e.g. the Search charm, but instead operates only on the MRU list of a single application, you usually have to type only a few characters until you can press Enter or Ctrl+E.   Ctrl+C copies the file path of the selected MRU item, Ctrl+Shift+C copies the directory If you have several versions of Visual Studio installed, the context menu lets you open a solution in a higher version.   Using the context menu, you can open a Visual Studio solution in Blend. So far I have only mentioned Visual Studio, but Emaroo knows about other applications, too. It remembers the last application you used, you can change between applications with the left/right arrow or accelerator keys. Press F1 or click the Emaroo icon (the tab to the right) for a quick reference. Which applications does Emaroo know about? Emaroo knows the MRU lists of Visual Studio 2008/2010/2012/2013 Expression Blend 4, Blend for Visual Studio 2012, Blend for Visual Studio 2013 Microsoft Word 2007/2010/2013 Microsoft Excel 2007/2010/2013 Microsoft PowerPoint 2007/2010/2013 Photoshop CS6 IrfanView (most recently used directories) Windows Explorer (directories most recently typed into the address bar) Applications that are not installed aren’t shown, of course. Where can I download it? On the Emaroo website: www.roland-weigelt.de/emaroo Have fun!

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  • Snap Spiffy Linux Screenshots with Shutter

    <b>LinuxPlanet:</b> "Paul Ferrill introduces us to the Shutter screen grab for Linux application. Shutter offers a simple interface and a whole lot of functionality. including cursor capture, whole Web page capture, and annotations."

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  • Useful links

    - by Madhan ayyasamy
    Difference between STI vs Polymorphic associationsSTI vs PolymorphicDifference between habtm vs has_many :throughhabtm vs throughCapistrano Guide linkCapistrano guideRails application without database stuffclass Car < ActiveRecord::Baseself.abstract = trueendAnother link: rails without databaseNamed scope useful linkNamed scopeDifference between http and https verbhttp vs httpsRails 2.3 useful guide websiterails 2.3 guide

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  • How to suggest using an ORM instead of stored procedures?

    - by Wayne M
    I work at a company that only uses stored procedures for all data access, which makes it very annoying to keep our local databases in sync as every commit we have to run new procs. I have used some basic ORMs in the past and I find the experience much better and cleaner. I'd like to suggest to the development manager and rest of the team that we look into using an ORM Of some kind for future development (the rest of the team are only familiar with stored procedures and have never used anything else). The current architecture is .NET 3.5 written like .NET 1.1, with "god classes" that use a strange implementation of ActiveRecord and return untyped DataSets which are looped over in code-behind files - the classes work something like this: class Foo { public bool LoadFoo() { bool blnResult = false; if (this.FooID == 0) { throw new Exception("FooID must be set before calling this method."); } DataSet ds = // ... call to Sproc if (ds.Tables[0].Rows.Count > 0) { foo.FooName = ds.Tables[0].Rows[0]["FooName"].ToString(); // other properties set blnResult = true; } return blnResult; } } // Consumer Foo foo = new Foo(); foo.FooID = 1234; foo.LoadFoo(); // do stuff with foo... There is pretty much no application of any design patterns. There are no tests whatsoever (nobody else knows how to write unit tests, and testing is done through manually loading up the website and poking around). Looking through our database we have: 199 tables, 13 views, a whopping 926 stored procedures and 93 functions. About 30 or so tables are used for batch jobs or external things, the remainder are used in our core application. Is it even worth pursuing a different approach in this scenario? I'm talking about moving forward only since we aren't allowed to refactor the existing code since "it works" so we cannot change the existing classes to use an ORM, but I don't know how often we add brand new modules instead of adding to/fixing current modules so I'm not sure if an ORM is the right approach (too much invested in stored procedures and DataSets). If it is the right choice, how should I present the case for using one? Off the top of my head the only benefits I can think of is having cleaner code (although it might not be, since the current architecture isn't built with ORMs in mind so we would basically be jury-rigging ORMs on to future modules but the old ones would still be using the DataSets) and less hassle to have to remember what procedure scripts have been run and which need to be run, etc. but that's it, and I don't know how compelling an argument that would be. Maintainability is another concern but one that nobody except me seems to be concerned about.

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  • Oracle Database In-Memory

    - by Mike.Hallett(at)Oracle-BI&EPM
    Normal 0 false false false EN-GB X-NONE X-NONE Larry Ellison unveiled the next major milestone in database technology, Oracle Database In-Memory, on June 10, 2014. Oracle Database In-Memory will be generally available in July 2014 and can be used with all hardware platforms on which Oracle Database 12c is supported. This option will accelerate database performance by orders of magnitude for analytics, data warehousing, and reporting while also speeding up online transaction processing (OLTP). It allows any existing Oracle Database-compatible application to automatically and transparently take advantage of columnar in-memory processing, without additional programming or application changes. Benefits Fast ad-hoc analytics without the need to pre-create indexes Completely transparent to existing applications Faster mixed workload OLTP No database size limit Industrial strength availability and security Robustness and maturity of Oracle Database 12c To find out more see Oracle Database In-Memory Comment from Rittman Mead on Oracle In-Memory Option Launch  ... and I will let you know how this unfolds in regards to advantages for OBI11g and Exalytics and Big Data over the coming months. /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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  • New Exadata public references

    - by Javier Puerta
    The following customers are now public references for Exadata. Show your customers how other companies in their industries are leveraging Exadata to achieve their business objectives. BRITISH TELECOM - Communications - United Kingdom 2x Full Rack + 1x Quarter Rack Exadata Database Machine Oracle University Training Courses Success Story DEUTSCHE BANK - Financial Services - Germany 18x Full Rack Exadata Database Machine Warehouse for Credit Risk Reporting running on Exa Success Story OPENBAAR MINISTERIE - Public Sector - Netherlands 1x Full Rack Exadata Database Machine Datawarehouse usage Success Story ADRIATIC SLOVENICA - Insurance - Slovenia 1x Quarter Rack Exadata Database Machine running on Linux Replacing Oracle DB and Oracle Application Server Success Story More customer success stories at Oracle.com References

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  • Looking for a disk manager that has options for setting allocation sizes in paritions

    - by mango
    I'm looking for a GUI program that is compatible with Ubuntu 13.10 - Server X86-64 that has all the features of Gparted but also allows for setting custom allocation sizes when creating a partition. Eg: Ability to create a 4gb Fat32 parition with 32 kilobyte allocation size. Please don't suggest a terminal only application, no matter how awesome it might be, because that's not what I asked. Wow, I come off like a right up prick when I write, eh?

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  • Webcast Q&A: ING on How to Scale Role Management and Compliance

    - by Tanu Sood
    Thanks to all who attended the live webcast we hosted on ING: Scaling Role Management and Access Certifications to Thousands of Applications on Wed, April 11th. Those of you who couldn’t join us, the webcast replay is now available. Many thanks to our guest speaker, Mark Robison, Enterprise Architect at ING for walking us through ING’s drivers and rationale for the platform approach, the phased implementation strategy, results & metrics, roadmap and recommendations. We greatly appreciate the insight he shared with us all on the deployment synergies between Oracle Identity Manager (OIM) and Oracle Identity Analytics (OIA) to enforce streamlined user and role management and scalable compliance. Mark was also kind enough to walk us through specific solutions features that helped ING manage the problem of role explosion and implement closed loop remediation. Our host speaker, Neil Gandhi, Principal Product Manager, Oracle rounded off the presentation by discussing common use cases and deployment scenarios we see organizations implement to automate user/identity administration and enforce closed-loop scalable compliance. Neil also called out the specific features in Oracle Identity Analytics 11gR1 that cater to expediting and streamlining compliance processes such as access certifications. While we tackled a few questions during the webcast, we have captured the responses to those that we weren’t able to get to here; our sincere thanks to Mark Robison for taking the time to respond to questions specific to ING’s implementation and strategy. Q. Did you include business friendly entitlment descriptions, or is the business seeing application descriptors A. We include very business friendly descriptions.  The OIA tool has the facility to allow this. Q. When doing attestation on job change, who is in the workflow to review and confirm that the employee should continue to have access? Is that a best practice?   A. The new and old manager  are in the workflow.  The tool can check for any Separation of Duties (SOD) violations with both having similiar accesses.  It may not be a best practice, but it is a reality of doing your old and new job for a transition period on a transfer. Q. What versions of OIM and OIA are being used at ING?   A. OIM 11gR1 and OIA 11gR1; the very latest versions available. Q. Are you using an entitlements / role catalog?   A. Yes. We use both roles and entitlements. Q. What specific unexpected benefits did the Identity Warehouse provide ING?   A. The most unanticipated was to help Legal Hold identify user ID's in the various applications.   Other benefits included providing a one stop shop for all aggregated ID information. Q. How fine grained are your application and entitlements? Did OIA, OIM support that level of granularity?   A. We have some very fine grained entitlements, but we role this up into approved Roles to allow for easier management.   For managing very fine grained entitlements, Oracle offers the Oracle Entitlement Server.  We currently do not own this software but are considering it. Q. Do you allow any individual access or is everything truly role based?   A. We are a hybrid environment with roles and individual positive and negative entitlements Q. Did you use an Agile methodology like scrum to deliver functionality during your project? A. We started with waterfall, but used an agile approach to provide benefits after the initial implementation Q. How did you handle rolling out the standard ID format to existing users? A. We just used the standard IDs for new users.  We have not taken on a project to address the existing nonstandard IDs. Q. To avoid role explosion, how do you deal with apps that require more than a couple of entitlement TYPES? For example, an app may have different levels of access and it may need to know the user's country/state to associate them with particular customers.   A. We focus on the functional user and craft the role around their daily job requirements.  The role captures the required application entitlements.  To keep role explosion down, we use role mining in OIA and also meet and interview the business.  It is an iterative process to get role consensus. Q. Great presentation! How many rounds of Certifications has ING performed so far?  A. Around 7 quarters and constant certifications on transfer. Q. Did you have executive support from the top down   A. Yes  The executive support was key to our success. Q. For your cloud instance are you using OIA or OIM as SaaS?  A. No.  We are just provisioning and deprovisioning to various Cloud providers.  (Service Now is an example) Q. How do you ensure a role owner does not get more priviliges as are intended and thus violates another role, e,g, a DBA Roles should not get tor rigt to run somethings as root, as this would affect the root role? A. We have SOD  checks.  Also all Roles are initially approved by external audit and the role owners have to certify the roles and any changes Q. What is your ratio of employees to roles?   A. We are still in process going through our various lines of business, so I do not have a final ratio.  From what we have seen, the ratio varies greatly depending on the Line of Business and the diversity of Job Functions.  For standardized lines of business such as call centers, the ratio is very good where we can have a single role that covers many employees.  For specialized lines of business like treasury, it can be one or two people per role. Q. Is ING using Oracle On Demand service ?   A. No Q. Do you have to implement or migrate to OIM in order to get the Identity Warehouse, or can OIA provide the identity warehouse as well if you haven't reached OIM yet? A. No, OIM deployment is not required to implement OIA’s Identity Warehouse but as you heard during the webcast, there are tremendous deployment synergies in deploying both OIA and OIM together. Q. When is the Security Governor product coming out? A. Oracle Security Governor for Healthcare is available today. Hope you enjoyed the webcast and we look forward to having you join us for the next webcast in the Customers Talk: Identity as a Platform webcast series: Toyota: Putting Customers First – Identity Platform as a Business Enabler Wednesday, May 16th at 10 am PST/ 1 pm EST Register Today You can also register for a live event at a city near you where Aberdeen’s Derek Brink will discuss the survey results from the recently published report “Analyzing Platform vs. Point Solution Approach in Identity”. And, you can do a quick (& free)  online assessment of your identity programs by benchmarking it against the 160 organizations surveyed  in the Aberdeen report, compliments of Oracle. Here’s the slide deck from our ING webcast: ING webcast platform View more presentations from OracleIDM

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  • Outlook of XBAP technology [closed]

    - by Dan
    My company is debating releasing an application using XBAP deployment. Does anyone know the feasibility of this technology? It seems like it only exists in IE and there's been no new development talk from MS about it. It seems like most people are going Silverlight (though even that's being cut from what I can tell in favor of HTML5). What are your thoughts? I can't even seem to find anything about MS supporting it in IE10.

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  • Facilitate access to system tray under gksudo -u user

    - by MetaChrome
    I would like to run ownCloud client as a different user, with something like: gksudo -u owncloud owncloud However, it is specifying: ownCloud requires a working system tray. Please install a system tray application such as trayer. If you are running xfce follow these instructions: http://docs.xfce.org/xfce/xfce4-panel/systray The question remains, how does one facilitate having the owncloud user account use the parent's system tray?

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  • Facebook: Releasing Flashcache

    <b>Facebook:</b> "We built Flashcache to help us scale InnoDB/MySQL, but it was designed as a generic caching module that can be used with any application built on top of any block device."

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  • keeping connection open all time in sql

    - by Costi
    I have developed a Windows application in c# in which multiple users can add some numbers and their name and can view the data entered. The problem that I have is that the sever is on my laptop and every time I log off or close my laptop, they are losing connection to the DB and can not add or view any more. It seems that the port is closed or something. Is there a way to keep the port and their connection established all the time even when I'm logging out?

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